a-a a-b a-c aaa aab aac aad aah aao aar aas ab- aba abb abc abd abh abo abr abs ac- aca acb acc acd ach aco acr acs ad- ada adb adc add adh ado adr ads aha ahb ahc ahd ahh aho ahr ahs aoa aob aoc aod aoh aoo aor aos ar- ara arb arc ard arh aro arr ars as- asa asb asc asd ash aso asr ass baa bab bac bad bah bao bar bas bba bbb bbc bbd bbh bbo bbr bbs bca bcb bcc bcd bch bco bcr bcs bda bdb bdc bdd bdh bdo bdr bds bha bhb bhc bhd bhh bho bhr bhs boa bob boc bod boh boo bor bos bra brb brd brh bro brr brs bsa bsb bsc bsd bsh bso bsr bss c-- caa cab cac cad cah cao car cas cba cbb cbc cbd cbh cbo cbr cbs cca ccb ccc ccd cch cco ccr ccs cda cdb cdc cdd cdh cdo cdr cds ch- cha chb chc chd chh cho chr chs co- coa cob coc cod coh coo cor cos cra crb crc crd crh cro crr crs csa csb csc csd csh cso csr css daa dab dac dad dah dao dar das dba dbb dbc dbd dbh dbo dbr dbs dca dcb dcc dcd dco dcr dcs dda ddb ddc ddd ddh ddo ddr dds dh- dha dhb dhc dhd dhh dho dhr dhs doa dob doc dod doh doo dor dos dra drb drc drd dro drr drs dsa dsb dsc dsd dsh dso dsr dss haa hab hac had hah hao har has hba hbb hbc hbd hbh hbo hbr hbs hca hcb hcc hcd hch hco hcr hcs hda hdb hdc hdd hdh hdo hdr hds hha hhb hhc hhd hhh hho hhr hhs hoa hob hoc hod hoh hoo hor hos hr- hra hrb hrc hrd hrh hro hrr hrs hsa hsb hsc hsd hsh hsr hss oaa oab oac oad oah oao oar oas ob- oba obb obc obd obh obo obr obs oc- oca ocb occ ocd och oco ocr ocs oda odb odc odd odh odo odr ods oha ohc ohd ohh oho ohr ohs oo- ooa oob ooc ood ooh ooo oor oos or- ora orb orc ord orh oro orr ors os- osa osb osc osd osh oso osr oss ra- raa rab rac rad rah rao rar ras rba rbb rbc rbd rbh rbo rbr rbs rca rcb rcc rcd rch rco rcr rcs rda rdb rdc rdd rdh rdo rdr rds rh- rha rhb rhc rhd rhh rho rhr rhs roa rob roc rod roh roo ror ros rra rrb rrc rrd rrh rrr rrs rsa rsb rsc rsd rsh rso rsr rss saa sab sac sad sah sao sar sas sba sbb sbc sbd sbh sbo sbr sbs sca scb scc scd sch sco scr scs sda sdb sdc sdd sdh sdo sdr sds sh- sha shb shc shd shh sho shr shs soa sob soc sod soh soo sor sos sr- sra srb src srd srh sro srr srs ss- ssa ssb ssc ssd ssh sso ssr sss

a-do a-ha aaaa aaab aaac aaad aaah aaar aaas aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aaco aacr aacs aada aadc aads aaha aahs aaoo aara aarc aard aaro aars aasa aasc aasd aass abaa abab abac abad abar abas abb- abba abbb abbo abbr abbs abca abcb abcc abcd abch abcr abcs abda abdo abha abho abhr abhs aboa abob abod aboh aboo abor abos abra abrc abro abrs abs- absa absd abss acaa acab acac acad acar acas acba acca accc accd acch acco accs acda acdb acdc acds acha achh acho achr achs acoa acod acoh acor acos acr- acra acrc acro acrr acrs acsa acsc acsd acss adaa adab adac adad adah adao adar adas adba adbc adcc adcs adda addc addd addo addr adds adha adhd adho adhs adob adoc adod adoo ador ados adra adro adrs adsa adso adsr adss ahab ahac ahad ahah ahar ahas ahha ahhs ahoa ahod ahor ahra ahrc ahrr ahrs ahsa ahso ahss aoah aoba aoca aocs aodh aora aorb aors aosd aoss arab arac arad arah arar aras arba arbh arbs arc- arca arch arco arcs arda ardc ardo ards arh- arhs aroa arob arod aroo aror aros arr- arra arrc arrh arro arrr arrs ars- arsa arsc arsd arso asaa asab asac asad asah asao asar asas asba asbo asc- asca ascb ascc asch asco ascr asda asdo asds asha ashs asob asoc asod asor asos asra asrc asro asrs assa assc assd assh asso assr asss baaa baad baah baar baas baba babb babo babr babs bac- baca bacc bach baco bacs bada badb badd badh bado badr bads baha baho bahr bahs baoh baos bar- bara barb barc bard barh baro barr bars basa basc bash baso bass bbad bbas bbbb bbbs bbch bbdd bbdo bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcda bcds bchd bchs bcor bcos bcra bcrs bcsa bcsc bcss bd-r bdbc bddc bddh bdhs bdos bdsd bhao bhar bhca bhcc bhhs bhor bhra boab boac boad boar boas boba bobb bobo bobs boca boch boco bocs boda bodb bodh bodo bods boha bohd boho bohr bohs boob booc bood booh boor boos bor- bora bord borh boro borr bors bosa bosc bosh boso boss brab brac brad brah brao bras brca brcb brda brdo brds brhs broa brob broc brod broh broo bror bros brrr brrs brsb brsr bsaa bsac bsas bsbd bscs bshs bsod bsos bsra bsrd bssc bssd c-bo c-cd caaa caab caac caah caas caba cabo cabs cac- caca cacc cach caco cacr cada cadc cadd cado cadr cads caha cahs caod caor caos cara carb carc card caro carr cars casa casb casc casd cash caso casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbdb cbdc cbdo cbds cbha cbhs